package com.mashibing.internalcommon.util;

import com.auth0.jwt.JWT;
import com.auth0.jwt.JWTCreator;
import com.auth0.jwt.algorithms.Algorithm;
import com.auth0.jwt.interfaces.DecodedJWT;
import com.mashibing.internalcommon.dto.TokenResult;

import java.util.Calendar;
import java.util.HashMap;

public class JwtUtils {
    //盐
    private static final String SIGN = "CPFmsb!@#$$";

    private static final String JWT_KEY_PHONE = "Phone";

    //乘客是1，司机是2
    private static final String JWT_KEY_IDENTITY = "identity";

    //token类型
    private static final String JWT_TOKEN_TYPE = "tokenType";

    private static final String JWT_TOKEN_TIME = "tokenTime";

    //生成token
    public static String generatorToken(String passengerPhone, String identity, String tokenType) {

        HashMap<String, String> map = new HashMap<>();
        map.put(JWT_KEY_PHONE, passengerPhone);
        map.put(JWT_KEY_IDENTITY, identity);
        map.put(JWT_TOKEN_TYPE, tokenType);

        //防止每次生成的token一样
        map.put(JWT_TOKEN_TIME, Calendar.getInstance().getTime().toString());


        JWTCreator.Builder builder = JWT.create();

        //整合map
        map.forEach(
                (k, v) -> {
                    builder.withClaim(k, v);
                }
        );

        //整合过期时间
//        builder.withExpiresAt(date);

        //生成token
        String sign = builder.sign(Algorithm.HMAC256(SIGN));

        return sign;
    }

    //解析token
    public static TokenResult parseToken(String token) {
        DecodedJWT verify = JWT.require(Algorithm.HMAC256(SIGN)).build().verify(token);
        String phone = verify.getClaim(JWT_KEY_PHONE).asString();
        String identity = verify.getClaim(JWT_KEY_IDENTITY).asString();


        TokenResult tokenResult = new TokenResult();
        tokenResult.setPhone(phone);
        tokenResult.setIdentity(identity);
        return tokenResult;
    }

    /**
     * 校验token，主要判断token是否异常
     *
     * @param token
     * @return
     */
    public static TokenResult checkToken(String token) {
        TokenResult tokenResult = null;
        try {
            tokenResult = JwtUtils.parseToken(token);
        } catch (Exception e) {

        }
        return tokenResult;
    }


    public static void main(String[] args) {

        String s = generatorToken("17855516757", "1", "accessToken");
        System.out.println("生成的token: " + s);
        System.out.println("解析------------");
        TokenResult tokenResult = parseToken(s);
        System.out.println("手机号：" + tokenResult.getPhone());
        System.out.println("身份：" + tokenResult.getIdentity());

    }
}
